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Modified vegetable oil and preparation method thereof

A technology of modifying vegetable oil and vegetable oil, which is applied in the field of vegetable oil, can solve the problems of easy formation of sludge and sediment, unsatisfactory low-temperature performance, poor oxidation stability, etc., achieve good biodegradability, improve chemical stability, and good viscosity-temperature performance Effect

Inactive Publication Date: 2020-09-18
HUNAN CHENLI NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Vegetable oil-based lubricating oil has good sustainable productivity, good lubricating performance, biodegradability, low volatility, and high flash point, and has attracted widespread attention. However, the vegetable oil-based lubricating oil in the prior art has poor oxidation stability. It is easy to form sludge and sediment at high temperature, and it is easy to solidify at low temperature, and the low temperature performance is not ideal. These defects limit the further development of vegetable oil-based lubricants

Method used

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  • Modified vegetable oil and preparation method thereof
  • Modified vegetable oil and preparation method thereof
  • Modified vegetable oil and preparation method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0031] A kind of biodegradable environment-friendly lubricating oil, comprises the raw material of following weight part:

[0032]

[0033] Wherein, the preparation method of described modified castor oil, comprises the steps:

[0034] 1) Methyl hydrogen-containing silicone oil modified castor oil: Add 10 g of methyl hydrogen-containing silicone oil into a flask equipped with a constant temperature feeding funnel and a condenser tube, replace the air in the bottle with nitrogen, open the condensed water, and then add 0.3 g of catalyst, castor 13g of sesame oil and 50g of isopropanol were stirred and heated to 80°C, kept for 6 hours, and then the low-volatile substances were removed by distillation under reduced pressure to obtain castor oil modified by hydrogen-containing silicone oil; the catalyst was 2% chlorine Platinic acid in isopropanol;

[0035] 2) Transesterification: 20 g of castor oil modified with methyl hydrogen-containing silicone oil prepared in step 1), (2R,...

Embodiment 2

[0038] A kind of biodegradable environment-friendly lubricating oil, comprises the raw material of following weight part:

[0039]

[0040] Wherein, the preparation method of described modified palm oil comprises the steps:

[0041] 1) Modified palm oil with methyl hydrogen-containing silicone oil: Add 13g of methyl hydrogen-containing silicone oil into a flask equipped with a constant temperature feeding funnel and a condenser tube, replace the air in the bottle with argon, open the condensed water, and then add 0.5g of catalyst, 14g of palm oil and 65g of isopropanol were stirred and heated to 82°C, kept for 6.3 hours, then vacuum distillation to remove low-volatile substances to obtain hydrogen-containing silicone oil-modified palm oil; the catalyst was 2.4% by mass fraction Chloroplatinic acid solution in isopropanol;

[0042] 2) Transesterification: 20 g of palm oil modified by methyl hydrogen-containing silicone oil prepared in step 1), (2R,3S)-2,3,4-trihydroxy-3-met...

Embodiment 3

[0045] A kind of biodegradable environment-friendly lubricating oil, comprises the raw material of following weight part:

[0046]

[0047] Wherein, the preparation method of described modified coconut oil comprises the steps:

[0048] 1) Methyl hydrogen-containing silicone oil modified coconut oil: Add 17g of methyl hydrogen-containing silicone oil into a flask equipped with a constant temperature feeding funnel and a condenser tube, replace the air in the bottle with neon gas, open the condensed water, and then add 0.7g of catalyst, Coconut oil 18g and isopropanol 90g, stir and heat up to 84 ℃, keep warm for 6.8 hours, then vacuum distillation sloughs off low-volatile matter, obtains coconut oil modified by hydrogen-containing silicone oil; the catalyst is 2.8% Chloroplatinic acid solution in isopropanol;

[0049]2) Transesterification: 20 g of coconut oil modified with methyl hydrogen-containing silicone oil prepared in step 1), (2R,3S)-2,3,4-trihydroxy-3-methylbutyl di...

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Abstract

The invention discloses a preparation method of modified vegetable oil. The method comprises the following steps: 1) modifying vegetable oil with methyl hydrogen-containing silicone oil: adding methylhydrogen-containing silicone oil into a flask provided with a constant-temperature feeding funnel and a condensation pipe, replacing air in the flask with nitrogen or inert gas, opening condensate water, adding a catalyst, vegetable oil and isopropanol, stirring, heating to 80-85 DEG C, keeping the temperature for 6-7 hours, and performing reduced pressure distillation to remove low-volatility substances, thereby obtaining hydrogen-containing silicone oil modified vegetable oil; and 2) ester exchange: adding methyl hydrogen-containing silicone oil modified vegetable oil prepared in the step 1) and (2R,3S)-2,3,4-trihydroxyl-3-methylbutyl dihydrogen phosphate into an organic solvent, heating to 95-105 DEG C within 30-40 minutes under a vacuum pressure of 200 mbar; making the mixture carry out reactions for 2-3 hours under stirring at a stirring speed of 800-1000 rpm, and then carrying out rotary evaporation at 50-60 DEG C to remove low-volatility substances. The lubricating oil preparedfrom the modified vegetable oil is good in chemical stability, has an extreme pressure anti-wear effect, does not need to be added with an extreme pressure anti-wear agent additionally, is economicaland environment-friendly, and avoids the problem of overlarge viscosity caused by using a large amount of auxiliaries.

Description

[0001] This invention is a divisional application of the Chinese patent "a biodegradable environmentally friendly lubricating oil and its preparation method". The application date is December 23, 2017, and the application number is 201711412389.0. technical field [0002] The invention relates to the technical field of vegetable oil, in particular to a modified vegetable oil and a preparation method thereof. Background technique [0003] Lubricating oil is a liquid or semi-solid lubricant used in various types of automobiles and mechanical equipment to reduce friction and protect machinery and processed parts. It is mainly used for lubrication, cooling, rust prevention, cleaning, [0004] Sealing and cushioning functions. A large amount of lubricating oil in the process of production, use and discharge due to infiltration, leakage, spillage and improper handling has caused serious environmental problems that pollute soil and water resources, destroying the ecological environ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G77/395C08G77/38C08G63/91C10M169/04C10N30/06C10N30/10
CPCC08G63/912C08G77/38C08G77/395C10M169/044C10M2201/084C10M2205/026C10M2207/026C10M2207/12C10M2209/04C10M2209/084C10M2209/102C10M2215/06C10M2229/0405
Inventor 万章文
Owner HUNAN CHENLI NEW MATERIAL CO LTD
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